低密度奇偶校验码构造及编译码研究进展  

Survey on Construction,Encoding and Decoding of Low-Density Parity-Check Codes

作　　者：张用宇 吴东伟 左丽芬 刘冰 

机构地区：[1]解放军91469部队

出　　处：《电讯技术》2012年第8期1395-1403,共9页Telecommunication Engineering

基　　金：国家高技术研究发展计划(863计划)项目(2010AA7010422)~~

摘　　要：低密度奇偶校验(LDPC)码具有接近Shannon限的良好性能,能有效提高数据传输的可靠性。为提高LDPC码的性能,对码字的研究多集中于构造、编码和译码这几方面的基础研究。首先简要给出了LDPC码的基本描述,然后对二进制和多进制LDPC码的关键技术进行了系统归纳和全新分类,分别从构造、编码和译码3个方面进行了详细探讨,重点对最新的研究成果进行了全面分析和总结,对LDPC码今后的研究具有指导意义。Low - density parity - check （LDPC） codes are considered as a class of codes with Shannon - limit - approaching performance, which can improve reliability of data transmission effectively. In order to improve the performance of LDPC codes, most of the research is focused on construction, encoding and decoding which are the basis research. The basic description of LDPC codes is given firstly. The key technologies of binary and nonbinary LDPC codes are summarized systematically and classified in new ways, and the construction, encod- ing and decoding are investigated in detail. A comprehensive survey of the latest literatures is provided. The re- view is of high theoretical significance for the future work.

关 键 词：低密度奇偶校验码 奇偶校验矩阵 构造 编码 译码 

分 类 号：TN911.22[电子电信—通信与信息系统]